A249423 Integers k such that A249150(k) = k; integers k such that A249151(k) = k+1.

0, 35, 39, 62, 79, 83, 89, 104, 107, 131, 143, 149, 153, 159, 164, 167, 175, 179, 181, 194, 197, 199, 207, 209, 219, 259, 263, 269, 272, 274, 279, 285, 287, 296, 299, 305, 307, 311, 314, 319, 329, 339, 356, 359, 363, 373, 377, 379, 384, 389, 391, 395, 399, 407, 415, 417, 419, 424, 428, 431, 441, 449, 455, 461, 467, 475, 489, 512

Offset

1,2

Comments

Integers k such that {product of elements on row k of Pascal's triangle} is divisible by (k+1)! but not by (k+2)!

Links

Chai Wah Wu, Table of n, a(n) for n = 1..2570 (terms 1..732 from Antti Karttunen)

Prog

(Scheme) ;; With Antti Karttunen's IntSeq-library.
(define A249423 (FIXED-POINTS 1 0 A249150))

Crossrefs

Subsequence of A249434 and of A249429; it differs from the latter for the first time at n=17, where a(17) = 175 > 174 = A249429(17).

Cf. A000142, A001142, A007318, A249150, A249151, A249424, A249425, A249426.

Sequence in context: A061755 A094523 A249429 * A219799 A217007 A141741

Adjacent sequences: A249420 A249421 A249422 * A249424 A249425 A249426

Keyword

nonn

Author

Antti Karttunen, Oct 28 2014

Status

approved