37730

Appears in sequences

• a(n) = number of integer strings s(0),...,s(n) counted by array T in A026386 that have s(n)=4; also a(n) = T(2n,n-2).at n=6A026389
• Related to sept-factorial numbers A045754.at n=3A034904
• Numbers that define integer Heronian triangles [prime(a(n)), prime(a(n)+1), A068965(n)] with area A068966(n).at n=26A068964
• Triangle read by rows in which row n gives coefficients of polynomial R_n(y) that satisfies R_n(1/2) = 4^n, where R_n(y) forms the initial (n+1) terms of g.f. A077860(y)^(n+1).at n=26A097179
• A convolution triangle of numbers obtained from A034904.at n=6A132057
• Number of independent sets of nodes in the armchair (3,3) carbon nanotorus graph of breadth n (n>=1).at n=4A182141
• Integer areas of the intangents triangle of integer-sided triangles.at n=9A231740
• Numbers n such that A279513(n) is a primorial number (A002110).at n=42A284889
• Number of independent vertex sets (and vertex covers) in the 2n-crossed prism graph.at n=6A287327
• Number T(n,k) of partitions of [n] having exactly k blocks of maximal size; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=69A372722