-274

Appears in sequences

• Derivative of log of A007360.at n=24A023892
• a(n) = -2*a(n - 1) -a(n - 2) -a(n - 3), a(0) = a(1) = a(2) = 1.at n=11A056016
• McKay-Thompson series of class 20c for Monster.at n=66A058558
• McKay-Thompson series of class 30C for Monster.at n=37A058614
• a(n) = floor( prime(n-1)*A036263(n-2)/ A001223(n-1)).at n=31A094900
• Defining sequence for an inverse Fredholm-Rueppel triangle.at n=15A104977
• Let a_0 = 1 and for n > 0, let a_n be the smallest positive integer not already in the sequence such that (a_0 + a_1 x + a-2x^2 + ....)^(1/3) has integer coefficients. (Hanna's A083349). Let f(n) = n th term in the present sequence. Then a_0 + a_1 x + a_2 x^2 + ... = (1-x)^f(1) (1-x^2)^f(2) (1-x^3)^f(3) ....at n=19A110879
• Expansion of c(x^2-x^3), c(x) the g.f. of A000108.at n=12A115399
• The result of the integration Integral_{t=0..oo} -rho*exp(-rho*s*t)*t^j*s*log(1+t) dt can be written as (F(u,j)*exp(u)*Ei(1,u) + G(u,j))/u^j, where rho>0, s>0, and u=rho*s. Sequence is the regular triangle corresponding to G(u,j).at n=14A121922
• Riordan array (1/(1+x+x^2),x/(1+x)^2).at n=41A122917
• McKay-Thompson series of class 30C for the Monster group with a(0) = -1.at n=37A132321
• Expansion of q * chi(-q^3) * chi(-q^5) / ( chi(-q^2) * chi(-q^30) ) in powers of q where chi() is a Ramanujan theta function.at n=41A132967
• Sequence from expansion of Cartan E_11 12 state root sum zero characteristic polynomial: p(x)=1/(-1 + 274 x^2 - 3480 x^3 + 21205 x^4 - 76696 x^5 + 175891x^6 - 259324 x^7 + 240551 x^8 - 131824 x^9 + 37101 x^10 - 3676 x^11 - 44 x^12).at n=2A143076
• One fourth of the alternating sum of the squares of the first n Fibonacci numbers with index divisible by 3.at n=3A156091
• Triangle T(n, k) = n! * binomial(n, k)*( psi(n-k+1) - psi(k+1) ), read by rows.at n=20A157521
• Triangle T(n, k) = n! * (Harmonic number(n-k) - Harmonic number(k)), read by rows.at n=20A157525
• Numerator of Hermite(n, 4/13).at n=2A159496
• Numerator of Hermite(n, 14/23).at n=2A159883
• Differences between A147562 (Ulam-Warburton cellular automaton) and A187220 (Gullwing sequence).at n=62A187223
• a(n) = ceiling(li(2*2^n) - li(2^n)) - (pi(2*2^n) - pi(2^n)) with li(x) the logarithmic integral and pi(x) the prime counting function.at n=31A223853