46971

Appears in sequences

• Graham-Sloane-type lower bound on the size of a ternary (n,3,5) constant-weight code.at n=22A030505
• Numbers whose set of base-12 digits is {2,3}.at n=39A032812
• Number of points in N^n of norm <= 2.at n=33A055417
• Triangular numbers k*(k+1)/2 such that A068865(k) = k*(k+1)/2.at n=23A068866
• Triangular numbers whose digit permutations yield at least two further triangular numbers.at n=27A069674
• Expansion (1+x^3)/(1-x-x^7).at n=49A098527
• Numbers which are the sum of two positive cubes and divisible by 17.at n=34A099178
• a(n) = n*(n+1)*(n^2+n+1)/2.at n=17A110450
• Triangular numbers that can be written as sum of two positive cubes.at n=5A113958
• Triangular numbers for which the sum of the digits is a cube.at n=16A117803
• Coefficients of x in the reduction of the polynomial p(n,x) = ((x+2)^n + (x-2)^n)/2 by x^2->x+2.at n=9A192356
• Triangle of third-order Eulerian numbers: 3-Stirling permutations enumerated by ascents.at n=30A219512
• Least triangular number of the form p*triangular(n) where p is a prime number, or 0 if no such triangular number exists.at n=17A225789
• Expansion of x^2*(1-x)^3/((1-2*x)*(1-x+x^2)*(1-3*x+3x^2)).at n=18A227430
• Triangular numbers which have one or more occurrences of exactly five different digits.at n=35A241788
• Triangular numbers n with digits d_1, d_2, ..., d_k such that d_1*(d_1+1)/2 + ... + d_k*(d_k+1)/2 is a triangular number.at n=36A254957
• Number of irredundant sets in the n-pan graph.at n=18A291107
• The first of three consecutive triangular numbers the sum of which is equal to the sum of three consecutive primes.at n=26A298168
• Numbers k such that k![4] - 32 is prime, where k![4] = A007662(k) = quadruple factorial.at n=31A329167