21942

Appears in sequences

• Alkane (or paraffin) numbers l(11,n).at n=10A018212
• Alkane (or paraffin) numbers l(13,n).at n=8A018214
• Numbers n such that (6^n+1)^2-2 is prime.at n=19A100902
• Expansion of ((eta(q^2) * eta(q^14)) / (eta(q) * eta(q^7)))^3 in powers of q.at n=20A120006
• Expansion of eta(q^4) * eta(q^28) / (eta(q) * eta(q^7)) in powers of q.at n=41A123648
• Ulam's spiral (WNW spoke).at n=37A143859
• Numbers n that divide the sum of digits of 36^n.at n=44A220364
• Number of n-element subsets of [n+10] having an even sum.at n=8A282086
• Number of canonical 3-polytopes of size n.at n=19A319959
• Where records occur in A094593.at n=17A331398
• Expansion of (g/(1 - x*g))^3, where g = 1+x*g^3 is the g.f. of A001764.at n=6A391175