A000597Central factorial numbers: A008955(n,3).
36, 820, 7645, 44473, 191620, 669188, 1999370, 5293970, 12728936, 28285400, 58856655, 115842675, 217378200, 391367064, 679524340, 1142659012, …
The first 2 terms appear at position 108,667.
…34603486104543266482133936072602491412737245870066…
…12089291096941775436990436820256302405482262540190569…
| terms | string | first position | occurrences |
|---|---|---|---|
| 1 | 36 | 285 | 9,996,522 |
| 2 | 36820 | 108,667 | 10,017 |
| 3 | 368207645 | not within 1,000,000,000 | 0 |
Searched the first 1,000,000,000 digits. Strings longer than 12 digits are not indexed.