73000

Appears in sequences

• Convolution of primes with themselves.at n=33A014342
• Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,2,1.at n=5A037542
• Triangle T(n,k) of number of digraphs with a quasi-source on n labeled nodes and with k arcs, k=0,1,..,n*(n-1).at n=31A057272
• Triangular array related to tennis ball problem, read by rows.at n=57A079521
• Expansion of 1/(1-8x*c(9x)), where c(x) is the g.f. of A000108.at n=4A132869
• Numbers m whose reversal divides m+1.at n=11A247201
• Palindromic numbers in bases 3 and 9 written in base 10.at n=76A259386
• a(n) = (3*n^4 - 4*n^3 + n^2 + 4*n + 4)/4.at n=18A366478