21301
domain: N
Appears in sequences
- Squares written in base 4.at n=25A001739
- Decimal part of a(n)^(1/3) starts with reversal of its integer part: first term of runs.at n=25A034309
- Multiples of 7 whose sum of digits is equal to 7.at n=34A063416
- a(n) is the smallest j such that 1/1 + 1/4 + 1/7 + ... + 1/j exceeds n.at n=3A091463
- Numbers k such that the number of prime divisors of the k-th Catalan number (counted with multiplicity) divides k.at n=33A121612
- Integers arising in A133677.at n=22A133645
- Number of lattice points in the closed region bounded by the graphs of y = (5/6)*x^2, x = n, and y = 0, excluding points on the x-axis.at n=41A227347
- Row sums of triangle in A139040.at n=44A238383
- Number of tilings of an n X 1 rectangle by tiles of dimension 1 X 1 and 2 X 1 such that every tile is next to a tile of different size.at n=34A245596
- Expressed in base n, the number (n+1)^n.at n=2A259080
- a(n) = n^4/6 - 2*n^3/3 - n^2/6 + 5*n/3 + 1.at n=19A299198
- a(n) = (n+1)^4 written in base n.at n=3A362445