38656

Appears in sequences

• Generalized Catalan Numbers x^3*A(x)^2 + (x-1)*A(x) + 1 =0.at n=17A023431
• a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 1, 0, 1, 1.at n=19A025246
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 23 ones.at n=30A031791
• Gaps of 9 in sequence A038593 (upper terms).at n=24A038658
• Numbers whose base-14 representation has exactly 5 runs.at n=28A043666
• Number of ways writing 2^n as a sum of a prime and a nonprime.at n=19A062305
• a(0) = 1; for n>0, a(n) = number of distinct sums of subsets of {1, 1/2, 1/3, 1/4, ..., 1/n} (allowing the empty subset).at n=17A072207
• a(n) = (1/Pi)*(2^n/n)*(n-1)!*Integral_{t>=0} (sin(t)/t)^n dt.at n=7A099765
• Numbers n such that n and its digit reversal R(n) both are difference of positive cubes.at n=36A109879
• Record values in A003415 (arithmetic derivative).at n=33A131116
• Triangle read by rows: T(n,k) = 2^k*A123125(n,k).at n=32A141660
• Triangle read by rows: T(n, k) = (2^(n-k) + 2^k)*A008292(n+1, k+1).at n=24A154693
• Triangle read by rows, A055248 * (A005493 * 0^(n-k)).at n=50A159573
• Products of the 8th power of a prime and a distinct prime (p^8*q).at n=36A179668
• Number of 5-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=15A187300
• Values of n such that 6^n ends in n, or expomorphic numbers in "base" 6.at n=4A290788
• a(n) is the number of edges formed by n-secting the angles of an octagon.at n=38A335771
• Number of strict odd-length integer partitions of 2n.at n=40A344650
• AGM transform of odd numbers.at n=3A368369
• Primitive terms of A388271.at n=29A388272