21953

Appears in sequences

• a(n) = n^3 + 1.at n=29A001093
• Strong pseudoprimes to base 47.at n=15A020273
• Strong pseudoprimes to base 59.at n=20A020285
• Strong pseudoprimes to base 95.at n=9A020321
• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 42.at n=1A031630
• Decimal part of cube root of a(n) starts with 0: first term of runs (cubes excluded).at n=26A034126
• a(n) = n^3 if n is odd, n^3 + 1 otherwise.at n=28A129957
• Terms of A024670 that are not in A141805.at n=24A141806
• 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, 1, -1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.at n=8A150198
• a(n) = 28*n^2 + 1.at n=28A158556
• a(n) = A175369(n^2).at n=19A175370
• a(n) = (n^3+1)^3+1.at n=4A178391
• Replace 3^i with n^i in ternary representation of n.at n=27A193760
• Number of (w,x,y,z) with all terms in {1,...,n} and w >= |x-y| + |y-z|.at n=15A212675
• a(n) is the number of terms in the expansion of (x-y)(x^3-y^3)*(x^6-y^6)*(x^10-y^10)*...*(x^T_i-y^T_i), where T_i is the i-th triangular number.at n=49A222028
• Numbers which are the sum of two positive cubes and divisible by 29.at n=13A224483
• Number of tilings of a 7 X n rectangle using integer-sided square tiles of area > 1.at n=31A226371
• Number of overpartitions of n minus the number of partitions of n.at n=24A230441
• Semiprimes of the form k^3 + 1.at n=6A237040
• Number of 3Xn arrays containing n copies of 0..3-1 with no element 1 greater than its north, west, northwest or southwest neighbor modulo 3 and the upper left element equal to 0.at n=12A266826