140237

Properties

Appears in sequences

• 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 39.at n=11A031627
• The number of distinct (up to unitary similarity) *-subalgebras of the n X n complex matrices.at n=23A215925
• Primes p such that 10*p-1, 10*p-3, 10*p-7 and 10*p-9 are all prime.at n=34A243408
• Prime numbersat n=13028