61748

Appears in sequences

• Exponential convolution of Catalan numbers with themselves.at n=8A014330
• McKay-Thompson series of class 21C for the Monster group.at n=29A058565
• Numerators of increasingly better rational approximations to Pi with increasing denominators (3/1, 13/4, 16/5, 19/6, 22/7, 179/57, ...)at n=41A063674
• Number of binary strings of length n with equal numbers of 00100 and 10101 substrings.at n=17A164242
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of M (as in A204026), given by min(F(i+1),F(j+1)), where F=A000045 (Fibonacci numbers).at n=37A204027
• Numbers n with property that A062234(n) = A062234(n+1) = A062234(n+2) = A062234(n+3).at n=21A257892
• Number of 3Xn arrays containing n copies of 0..3-1 with no element 1 greater than its north, southwest or northwest neighbor modulo 3 and the upper left element equal to 0.at n=13A266879
• Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the expansion of e.g.f. exp(2*k*x)*(BesselI(0,2*x) - BesselI(1,2*x))^k.at n=63A294498
• Number of n X 4 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 3 or 6 neighboring 1s.at n=24A296550
• Number of compositions of 7*n-4 into parts 1 and 7.at n=7A373930