87530domain: NAppears in sequencesDecimal part of n^(1/11) starts with a 'nine digits' anagram.at n=32A034286Number of n X n 0..7 matrices with each 2X2 subblock idempotent.at n=12A224664a(n) = Sum_{k=0..n} binomial(n+7*k+7,k).at n=4A390391