40044

Appears in sequences

• Number of n-step mappings with 4 inputs.at n=24A005945
• a()=A037260 and its first [ A037261 ], 2nd [ A037262 ] and 3rd [ A037263 ] differences together include every number at most once and are monotonic and minimal.at n=26A037260
• Numbers k such that k and k+1 are modest (cf. A054986).at n=18A055018
• Q(p)/p where p runs through the primes and Q(k) is the k-th central quadrinomial coefficient (A005190).at n=4A087186
• 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, 0), (0, 0, -1), (0, 0, 1), (1, 1, 1)}.at n=8A150759
• Numbers whose decimal expansion contains only 0's and 4's.at n=19A169967
• Even numbers such that the sum of the even divisors and the sum of the odd divisors are a square or a cube.at n=30A263695
• Irregular triangle read by rows: the right-hand side of the triangle in A349813.at n=72A349814
• Central column (ignoring the zeros) of A349813, or leading entries in rows of A349814.at n=11A349819
• Numbers k such that sigma(k) = psi(k) + tau(k)^3.at n=12A390297