29891

Appears in sequences

• Centered tetrahedral numbers.at n=35A005894
• Pseudoprimes to base 7.at n=37A005938
• Strong pseudoprimes to base 7.at n=10A020233
• Strong pseudoprimes to base 27.at n=27A020253
• Strong pseudoprimes to base 44.at n=24A020270
• Strong pseudoprimes to base 48.at n=21A020274
• Strong pseudoprimes to base 49.at n=14A020275
• Strong pseudoprimes to base 51.at n=17A020277
• Strong pseudoprimes to base 55.at n=15A020281
• Strong pseudoprimes to base 60.at n=17A020286
• Strong pseudoprimes to base 67.at n=14A020293
• Strong pseudoprimes to base 75.at n=28A020301
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 41 ones.at n=9A031809
• a(n) = (2*n+1)*(12*n+1).at n=35A033576
• Expansion of (1-x-sqrt(1-2x-19x^2))/(10x^2).at n=8A091148
• Records in A007535.at n=41A098654
• 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, 0, 0), (0, -1, 0), (0, 0, 1), (1, 1, 0), (1, 1, 1)}.at n=7A151229
• a(0) = 1; for n > 0, a(n) = 41*n^2 + 2.at n=27A206399
• Main diagonal of Ludic array A255127 (and A255129): a(n) = A255127(n,n).at n=28A255410
• Euler pseudoprimes to base 7: composite integers such that abs(7^((n - 1)/2)) == 1 mod n.at n=24A262054