42070

Appears in sequences

• a(n) = Sum_{i=0..n} Sum_{j=0..i} T(i,j), T given by A026536.at n=12A026550
• Expansion of x^4*(2+x)/((1+x)*(1-x)^5).at n=26A082289
• Number of plane partitions of n with 3 or more columns.at n=18A089924
• Floor((prime(n)/n)^n).at n=9A121623
• Expansion of 1/(x^k*(1-x-3*x^(k+1))) for k=8.at n=34A143459
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, -1), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.at n=8A150720
• Numerator of Bernoulli(n, 4/9).at n=7A158956
• Integers whose squares are the sums of 24 consecutive squares.at n=17A180274
• Triangle T(n,k), read by rows, given by (0, 2, 3, 4, 6, 6, 9, 8, 12, 10, 15, ...) DELTA (1, 0, 1, 0, 1, 0, 1, 0, 1, 0, ...) where DELTA is the operator defined in A084938.at n=31A185285
• a(n) = Sum_{j=0..2*n} Sum_{k=0..j} A026536(j, k).at n=6A352972