80739

Appears in sequences

• Expansion of 1/((1-x)*(1-5*x)*(1-7*x)*(1-12*x)).at n=4A022456
• Numbers k such that k^2 is palindromic in base 4.at n=32A029986
• Number of different strings of length n+4 obtained from "123...n" by iteratively duplicating any substring.at n=32A137741
• First of quadruples of consecutive happy numbers.at n=11A194352
• Number of (n+1) X 5 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock equal to the number in all its horizontal and vertical neighbors.at n=20A206263
• Expansion of (1/x) * Series_Reversion( x * (1-x) * (1-x^3)^2 ).at n=10A369296