A332560 a(n) = (n + A332558(n))!/(n-1)!.

120, 120, 60, 840, 15120, 332640, 55440, 7920, 2162160, 240240, 98017920, 8910720, 253955520, 19535040, 1395360, 19769460480, 1235591280, 72681840, 4037880, 212520, 4475671200, 173059286400, 7866331200, 342014400, 14250600, 19033511777280, 732058145280

Offset: 1

Author

Scott R. Shannon and N. J. A. Sloane, Feb 24 2020

Keywords

• nonn
• look

Links

• Jinyuan Wang, Table of n, a(n) for n = 1..10000
• J. S. Myers, R. Schroeppel, S. R. Shannon, N. J. A. Sloane, and P. Zimmermann, Three Cousins of Recaman's Sequence, arXiv:2004:14000, April 2020

Crossrefs

Cf. A061836, A332558, A332559, A332561.

Programs

PARI

a(n) = {my(r=n*(n+1)); for(k=2, oo, r=r*(n+k); if(r%(n+k+1)==0, return((n+k)!/(n-1)!))); } \\ Jinyuan Wang, Feb 25 2020