84048

Appears in sequences

• Number of 3-connected self-dual planar graphs with 2n edges.at n=11A002841
• Palindromes with exactly 7 prime factors (counted with multiplicity).at n=15A046333
• Number of (n+1)X(n+1) 0..4 arrays with all the 2X2 subblocks nonsingular and the array of 2X2 subblock determinants symmetric.at n=1A187461
• T(n,k)=Number of (n+1)X(n+1) 0..k arrays with all the 2X2 subblocks nonsingular and the array of 2X2 subblock determinants symmetric.at n=11A187462
• Number of 3X3 0..n arrays with all the 2X2 subblocks nonsingular and the array of 2X2 subblock determinants symmetric.at n=3A187463
• List of numbers k whose consecutive digits increase or decrease by d-1, where d is the number of digits in k.at n=99A292439
• a(n) is the smallest number that has exactly n divisors that are cyclops numbers (A134808).at n=10A357033