A134821 Concatenation of next n Motzkin numbers.
1, 12, 4921, 51127323835, 218857981551141835113634, 310572853467235677965363821819928450852019, 1425475594007632231129760415319272779790434025012566981847673007772802
Offset: 1
Extensions
Edited by Charles R Greathouse IV, Apr 25 2010