24354

Appears in sequences

• Generalized tangent numbers d_(n,2).at n=17A000176
• a(n) = dot_product(1,2,...,n)*(7,8,...,n,1,2,3,4,5,6).at n=37A026049
• Sum{T(n-k,k)}, 0<=k<=[ n/2 ], where T is the array in A026386.at n=18A026397
• A convolution triangle of numbers obtained from A025748.at n=50A048966
• a(1)=1, a(n) is the smallest integer > a(n-1) such that the sum of elements of the simple continued fraction for S(n)=1/a(1)+1/a(2)+...+1/a(n) equals n*(n+1)/2 the n-th triangular number.at n=27A071184
• Heptagonal numbers for which the sum of the digits is also a heptagonal number.at n=25A117650
• Vinogradov's constants arising in enumeration of solutions to Waring's problem in the evil numbers (A001969).at n=34A206375
• a(n) = n*(7*n^2 - 3*n - 1)/3.at n=22A214659
• a(n) = a(n-1) + a(n-2) + a(n-3) with a(0) = 1, a(1) = a(2) = 2.at n=17A214727
• Least number k not divisible by 10 such that the decimal expansion of k^n contains some digit exactly n times.at n=28A243151
• G.f.: Product_{k>=1} 1/(1-x^k)^(6*k).at n=7A255613
• Least number x such that x^n has n digits equal to k. Case k = 7.at n=28A285454
• Number of 6-cycles in the n-triangular honeycomb bishop graph.at n=7A290779
• The first of two consecutive heptagonal numbers the sum of which is equal to the sum of two consecutive primes.at n=4A298465
• Least number k such that the determinant of the circulant matrix formed by its decimal digits is equal to k/n.at n=32A323485